Debian: WLAN associated, but not pinging

Question

I have a brand new base install of Debian Lenny.

iwconfig

shows that I am associated with my home router over Wifi.

dhclient wlan0

gives me

bound to 192.168.1.121

But

ping google.com

gives no response, and

ping 192.168.1.1

(my router's IP) gives the response

Destination Host Unreachable

And by the way, as soon as a re-plug in my wired Ethernet, ping and everything else work.

Answer 1

I would guess that your dhcp server is not sending the gateway information. Check it out with the route command. You may configure it yourself just to check it out:

route add default gw 192.168.1.1

Then try to re-ping.